Updated 16 Sep 2026 · recomputed nightly
Is April 2027 a good month to visit London?
Calm — the typical April day in London is calmer than 72% of its year.
The weather is the trade-off here, not the crowds.
Calm · Lively · Busy · Packed rank a day against London's own year — not a headcount.
This month's verified events: TCS London Marathon (first two-day edition) (24–25).
April 2027 is the London most visitors never see — Calm on 28 of 30 days — 2 days run Busy or Packed, cool and showery, around 14°C / 57°F with rain on about 8 days.
Yes. The typical April day in London is Calm, and only 2 of the 30 days in our window run Busy or Packed. Expect around 14 °C by day, with rain on about 8 days. The crowd comes with the school holidays in France and Germany. Cruise ships call on 7 of the 30 days. TCS London Marathon (first two-day edition) falls on 24–25 April. No week of April is meaningfully quieter — the typical day is Calm throughout; pick by day instead. The crush is at Westminster Bridge and Parliament Square; the quiet is at the royal parks' chain. The calmest day is Saturday 10 April, the busiest Saturday 24 April.
In short, a genuinely good window to pick.
Among the 12 months we forecast for London, April ranks 7th for crowd pressure. Its heaviest day is Sat 24 Apr, busier than 99% of the year; its lightest is Sat 10 Apr at 24%.
You won't need skip-the-line tickets here — that's rather the point. A month like this is the one for the longer visit — the guided walk, the food tour, the day out of town, with room and time to enjoy them. see what's on →
Pack for cold — around 14°C by day.
The one thing you wear all day, every day of the trip.
See walking shoes →
Cold shortens a battery's working life, and the phone holds the tickets.
See power banks →
How busy is London in April?
The busiest days are the 24th and 25th. Away from those, most days sit Calm. The calmest stretch is the 1st–23rd.
Ships call on 7 of 30 days, a typical call day carrying at least 998 guests — real, but a secondary part of the crowd here; the season moves the needle more.
The month is not one thing: its lightest day sits at 24% of the year and its heaviest at 99%, so where you land inside it matters. Daylight runs about 14 hours.
Calm apart from 2 days — the 24th and 25th, which run packed or busier. Any other date works.
Thu 01 Apr Calm busier than 32% of days here · ⚓1 · Germany school holidays
- Viking Libra — guest capacity 998
Record London on Thu 1 Apr 2027 is forecast Calm. 1 cruise ship scheduled, at least 998 guests at double occupancy. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-01 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 02 Apr Calm busier than 32% of days here · ⚓1 · Germany school holidays
- Viking Vela — guest capacity 998 02:00–?
Record London on Fri 2 Apr 2027 is forecast Calm. 1 cruise ship scheduled, at least 998 guests at double occupancy. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-02 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 03 Apr Calm busier than 31% of days here · ⚓1 · Germany school holidays
- Viking Vela — guest capacity 998
Record London on Sat 3 Apr 2027 is forecast Calm. 1 cruise ship scheduled, at least 998 guests at double occupancy. Why: school holidays in Germany. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-03 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 04 Apr Calm busier than 25% of days here · Germany school holidays
Record London on Sun 4 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-04 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 05 Apr Calm busier than 25% of days here · Germany school holidays
Record London on Mon 5 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-05 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 06 Apr Calm busier than 25% of days here · Germany school holidays
Record London on Tue 6 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-06 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 07 Apr Calm busier than 37% of days here · ⚓1 · Germany school holidays
- Ambition — guest capacity 1,248 08:00–20:00
Record London on Wed 7 Apr 2027 is forecast Calm. 1 cruise ship scheduled, at least 1,248 guests at double occupancy; ships in port 08:00–20:00. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-07 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 08 Apr Calm busier than 25% of days here · Germany school holidays
Record London on Thu 8 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-08 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 09 Apr Calm busier than 25% of days here · Germany school holidays
Record London on Fri 9 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-09 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 10 Apr Calm busier than 24% of days here · Germany school holidays
Record London on Sat 10 Apr 2027 is forecast Calm. Why: school holidays in Germany and France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-10 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 11 Apr Calm busier than 37% of days here · ⚓1 · France school holidays
- Ambience — guest capacity 1,596 08:00–17:00
Record London on Sun 11 Apr 2027 is forecast Calm. 1 cruise ship scheduled, at least 1,596 guests at double occupancy; ships in port 08:00–17:00. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-11 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 12 Apr Calm busier than 27% of days here · France school holidays
Record London on Mon 12 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-12 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 13 Apr Calm busier than 27% of days here · France school holidays
Record London on Tue 13 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-13 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 14 Apr Calm busier than 27% of days here · France school holidays
Record London on Wed 14 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-14 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 15 Apr Calm busier than 30% of days here · ⚓1 · France school holidays
- Star Pride — guest capacity 343 09:00–20:00
Record London on Thu 15 Apr 2027 is forecast Calm. Why: school holidays in France. 1 cruise ship scheduled, at least 343 guests at double occupancy; ships in port 09:00–20:00. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-15 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 16 Apr Calm busier than 27% of days here · France school holidays
Record London on Fri 16 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-16 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 17 Apr Calm busier than 27% of days here · France school holidays
Record London on Sat 17 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-17 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 18 Apr Calm busier than 30% of days here · France school holidays
Record London on Sun 18 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-18 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 19 Apr Calm busier than 29% of days here · France school holidays
Record London on Mon 19 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-19 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 20 Apr Calm busier than 29% of days here · France school holidays
Record London on Tue 20 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-20 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 21 Apr Calm busier than 29% of days here · France school holidays
Record London on Wed 21 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-21 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 22 Apr Calm busier than 29% of days here · France school holidays
Record London on Thu 22 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-22 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 23 Apr Calm busier than 30% of days here · France school holidays
Record London on Fri 23 Apr 2027 is forecast Calm. Why: France school holidays; Spain public holiday. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-23 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sat 24 Apr Packed busier than 99% of days here · ⚓1 · France school holidays · TCS London Marathon (first two-day edition)
Event on this day
TCS London Marathon (first two-day edition)
24–25 Apr 2027The biggest marathon crowds in the world, and for the first time spread over a whole weekend: runners from Greenwich to Westminster on both the Saturday and the Sunday.
- Ambience — guest capacity 1,596 08:00–17:00
Record London on Sat 24 Apr 2027 is forecast Packed. 1 cruise ship scheduled, at least 1,596 guests at double occupancy; ships in port 08:00–17:00. Why: school holidays in France; TCS London Marathon. Nearest calmer day: Fri 23 Apr (Calm). Ship-by-ship detail for the day, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/london/#d-2027-04-24 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Sun 25 Apr Packed busier than 99% of days here · France school holidays · TCS London Marathon (first two-day edition)
Event on this day
TCS London Marathon (first two-day edition)
24–25 Apr 2027The biggest marathon crowds in the world, and for the first time spread over a whole weekend: runners from Greenwich to Westminster on both the Saturday and the Sunday.
Record London on Sun 25 Apr 2027 is forecast Packed. Why: school holidays in France; TCS London Marathon. Nearest calmer day: Mon 26 Apr (Calm). The day in full, the year at a glance, and what's worth booking ahead: https://avoid-crowds.com/london/#d-2027-04-25 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Mon 26 Apr Calm busier than 28% of days here · France school holidays
Record London on Mon 26 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-26 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Tue 27 Apr Calm busier than 28% of days here · France school holidays
Record London on Tue 27 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-27 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Wed 28 Apr Calm busier than 28% of days here · France school holidays
Record London on Wed 28 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-28 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Thu 29 Apr Calm busier than 28% of days here · France school holidays
Record London on Thu 29 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-29 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Fri 30 Apr Calm busier than 28% of days here · France school holidays
Record London on Fri 30 Apr 2027 is forecast Calm. Why: school holidays in France. This quiet day in full, the year at a glance, and how this day compares: https://avoid-crowds.com/london/#d-2027-04-30 (Avoid-Crowds, as of 16 Sep 2026; recomputed nightly.)
Which week of April is quietest in London?
No week of April is meaningfully quieter — the typical day is Calm throughout; pick by day instead.
The upside of a quiet April
- The big-ticket sights are walk-ins now; the summer booking scramble is gone.
- Keep the days loose — decide over breakfast, not weeks ahead.
- Photograph the landmarks empty — the shot everyone else queues for.
No queues to skip, and nothing to book ahead — that's the whole point.
April weather in London
Mild — around 14°C / 57°F, with a light jacket for the evenings, with rain on about 8 days, so keep a layer handy.
This is the value month: no need to book far ahead, and the freedom to change plans on the day is part of what you're getting.
More about London in April
Based on: UK's public holidays · school vacations across France and Germany · the official overseas-visits pattern (ONS, measured 2021–2023; UK national curve) · five years of weather records (2019–2023) · confirmed event dates · the published cruise schedule
Every figure is recomputed nightly from real cruise schedules, public and school holidays, and long-run climate normals. Gaps are shown, not filled.
